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= 22/7 x 3,5 x 3,5
= 38,5 cm²
luas persegi panjang= 20 x 10 = 200 cm²
luas trapesium= (10+12) x 12 /2
= 22 x 6
= 132 cm²
luas keseluruhan = 38,5 + 200 + 132
= 370,5 cm²
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